At first, however, they contended only with staves, called _rudes_, or with blunted weapons; but when warmed and inspirited by the pretense of battle, they changed their weapons, and advanced at the sound of trumpets to the real strife. The conquered looked to the people or to the emperor for life; his antagonist had no power to grant or to refuse it; but if the spectators were dissatisfied and gave the signal of death, he was obliged to become the executioner of their will. This signal was the turning down the thumbs; as is well known. If any showed signs of fear, their death was certain; if on the other hand they waited the fatal stroke with intrepidity, the people generally relented. But fear and want of spirit were of very rare occurrence, insomuch that Cicero more than once proposed the principle of honor which actuated gladiators as an admirable model of constancy and courage, by which he intended to animate himself and others to suffer everything in defence of the commonwealth. The bodies of the slain were dragged with a hook or on a cart through a gate called Libitinensis, the Gate of Death. The victor was rewarded with a sum of money, contributed by the spectators or bestowed from the treasury, or a palm-branch, or a garland of palm ornamented with colored ribbons--ensigns of frequent occurrence in ancient monuments. Those who survived three years were released from this service, and sometimes one who had given great satisfaction was enfranchised on the spot. This was done by presenting the staff (_rudis_) which was used in preluding to the combat; on receiving which, the gladiator, if a freeman, recovered his liberty; if a slave, he was not made free, but was released from the obligation of venturing his life any further in the arena. Gladiators were divided, according to the fashion of their armor and offensive weapons, into classes, known by the names of Thrax, Samnis, Myrmillo, and many others, of which a mere catalogue would be tedious, and it would be the work of a treatise to ascertain and describe their distinctive marks.